Jesus Camacho Rodriguez created HIVE-12017:
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Summary: Do not disable CBO by default when number of joins in a
query is equal or less than 1
Key: HIVE-12017
URL: https://issues.apache.org/jira/browse/HIVE-12017
Project: Hive
Issue Type: Improvement
Components: CBO
Affects Versions: 2.0.0
Reporter: Jesus Camacho Rodriguez
Assignee: Jesus Camacho Rodriguez
Instead, we could disable some parts of CBO that are not relevant if the query
contains 1 or 0 joins. Implementation should be able to define easily other
query patterns for which we might disable some parts of CBO (in case we want to
do it in the future).
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